Question

In $1953, S. L$. Miller created primitive earth conditions in the laboratory and gave experimental evidence for origin of first form of life from pre-existing non-living organic molecules. The primitive earth conditions created include

• A. low temperature, volcanic storms, atmosphere rich in oxygen
• B. low temperature, volcanic storms, reducing atmosphere
• C. high temperature, volcanic storms, non-reducing atmosphere
• D. high temperature, volcanic storms, reducing atmosphere containing $CH_{4}$, $NH_{3}$ , etc.

Answer 1

Answer: (D)

high temperature, volcanic storms, reducing atmosphere containing $CH_{4}$, $NH_{3}$ , etc.

Answer 2

Miller took a flask containing a mixture of gases (ammonia, methane, hydrogen). A high-frequency spark was constantly circulating. A small amount of water was boiled to generate water vapour. So, the correct answer is 'High temperature, volcanic storms, reducing atmosphere containing $CH _{4}, NH _{3}$, etc.